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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Purification and architecture of the ubiquitous Wave complex
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Purification and architecture of the ubiquitous Wave complex

机译:无处不在的Wave Complex的纯化和架构

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The Wave proteins are major activators of the Arp2/3 complex. The ubiquitous Wave-2 is required for actin polymerization at the leading edge of migrating cells. Here we purify Wave-2 from HeLa cells. Five proteins, Sra, Nap, Wave-2, Abi, and Hspc, are copurified, indicating that they form a tight complex. These proteins are only present in the complexed form, with the exception of Hspc, which displays a free pool. We reconstitute the Wave-2 complex by cotranslating in vitro the five subunits and use this system together with specific immunoprecipitations to study the molecular architecture of the complex. The complex is organized around a core of Nap and Abi. Sra is a peripheral subunit recruited on the Nap side, whereas the Wave and Hspc subunits are recruited on the Abi side of the core. [References: 23]
机译:Wave蛋白是Arp2 / 3复合物的主要激活剂。普遍存在的Wave-2是肌动蛋白在迁移细胞前沿聚合所必需的。在这里,我们从HeLa细胞中纯化Wave-2。共纯化了五种蛋白质,Sra,Nap,Wave-2,Abi和Hspc,表明它们形成了紧密的复合物。这些蛋白仅以复合形式存在,但Hspc除外,后者显示一个自由池。我们通过在体外共翻译五个亚基来重构Wave-2复合物,并将该系统与特定的免疫沉淀一起使用以研究复合物的分子结构。该综合体是围绕Nap和Abi的核心组织的。 Sra是在Nap一侧募集的外围亚基,而Wave和Hspc子单元则在核心的Abi一侧募集。 [参考:23]

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